Barrel-elevator



(No Model.)

BARREL ELEVATOR.

No. 561,827. Patented June 9, 1896.

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UNITED STATES PATENT Erica AUGUSTUS SMITH, OF NEXV YORK, N. Y., ASSIGNORTO THE LINK-BELT ENGINEERING COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

BARREL ELEVATOR.

SPECIFICATION forming part of Letters Iatent No. 561,827, dated June 9,1896.

Application tiled June 25, 1890. Serial No. 356,648. (No model.)

To (LZZ whom it may concern.-

Beit known that I, AUcUsrUs Snrrn, a citizen of the United States, and aresident of the city of New York, State of New York, have invented a newand useful Improvement in Elevators for Handling Barrels, Sacks, andSimilar Articles, of which the following is a specification.

My invention relates to that type of elevators in which the barrels orother packages are to be discharged at various points along the line ofthe elevator; and its principal ob jects are to provide suitable meansof securing an automatic discharge at the intermediate points and torestore the carriers to operative posit-ions after discharge,

My invention consists in the various features of construction andarrangement of the carriers and the mechanism relating thereto,substantially as more fully hereinafter set forth, reference being madeto the accompanying drawings, forming part of this specification, inwhich- Figures 1 and 2 show vertical side sections Fig. 3 is a verticalfront view of the tray and spring. Fig. a is a partial front view of theelevator, showing the manner of mounting the trip; and Fig. 5 is anenlarged detail drawing of the same.

The carriers shown in the drawings each comprise a back plate II, whichis of suitable construction to be secured to any ordinary endlesscarrying band orbands, to which plate are secured the braces orframework I,furnishing bearings for the cross piece or shaft B, to whichshaft are pivotally mounted the carrying-arms G Gr. These carrying-armsG G are shown of a shape suitable to carrybarrels and other roundpackages, and they may be connected by a sheeting between their ends tobetter handle sacks and other articles, as illustrated in Fig. Thesecarrying-arms G G, secured to the shaft B, practically form a pivotcdcarrying-tray, whichis tiltable by an arm L, connected thereto or formedtherewith.

In order to automatically tilt the pivoted carrying-tray, I provide whatI have termed a lever device, which is mounted on the carrier-frame andcooperates with a trip device, and is connected with an arm to tilt thepivoted carrying-tray to discharge its load, and

the tray is then restored to its normal position as the lever devicepasses the trip by a spring or other suitable device. This lever devicein the present instance comprises the lovers D E, which together form atoggle-joint A, one end of the lever D being connected to the arm L, andthe other lever, E, being pivotally connected to the frame, as to theback plate II, at the point C. The lever E has an extension N projectingthrough the back plate H, which extension coijperates with the trip andcontrols the operation of the lever device.

The trip F is secured in proper relation to the carrier and is formedwith a cam-like surface Q at one end and a gradual incline M at theother end, for a purpose to be explained hereinafter, and the trip isshown mounted or supported by the swinging links T, one of the links, asthe lower one, being extended, as at O, to control the position of thetrip. In operative position this is held rigid by resting on the ledge Won the main frame of the elevator, and a wooden pin, as 1, serves toprevent the weight of the trip from carrying it down into an inoperativeposition when it is wanted for work, and, further, serves as abreaking-piece for safety in case the trip has been carelesslyleft inoperative position when the motion of the carrier has been reversed forlowering packages.

In the operation of my invention I prefer to arrange the pivotal line ofthe carryingtray substantially under the center of gravity of the loador slightly forward of a line dropped vertically from the center ofgravity with the rear of the tray resting against the back plate II,which latter is usually held firmly in an upright position by running inguide-grooves in the main elevator-framework at the sides. As aprecaution against the possibility of the premature discharge of theload, I prefer to construct the toggle-joint A of the lever device witha limited move ment downward in such a manner as to permit it to passslightly below the line of dead center, thus making a self-lockingdevice, as indicated in Fig. 2, which is perfectly safe. One advantagein disposing the pivotal line of the elevator-tray substantially underthe center of gravity of the load is that very little force need beexpended in tilting the piv- IGO oted earrying-tray to discharge itslead, which saves violence in discharging the load itself and minimizesthe strain on the earryin g band or bands and driving mechanismtherefor. As it is desirable to tilt the carrying tray quickly and letthe package roll or slide down the incline presented by the lowered endK of the carrying-arms G of the carryingtray before the elevator beltingor cables have had time to carry the tray much beyond thedischarge-point, I form the end Q of the trip F wit-h a rather abruptcam-like surface, which engages with the extension N of the lever E insuch a manner as to turn the lever E rapidly through its extreme arc ofmovement, which, operating through the other lever, D, of the toggle andwhich is connected with the arm Ii, tilts the carrying-tray to thedesired extent and with the desired rapidity.

The spring S is arranged in such manner as to resist the tilting motionof the carryingtray and to have a constant tendency to re turn the trayto its carrying position, so that the effect when the extension Nreaches the inclined portion M of the trip F is a gradual but surerestoration of the carrying-tray to an operative position, ready to pickup another package at a higher floor.

It is evident that my tray may be used with one or more carrying bandsor cables and that the details of construction of the trip and trays andof the lever-device connection between the trip and trays may be variedconsiderably without departing from the spirit of my invention, and I donot wish to be limited to the precise arrangement set forth; but,

Having thus fully described my invention and illustrated the preferredmanner of carrying it out, so that any one skilled in the art to whichit relates can understand and practice the same, what I claim as new,and desire to secure by Letters Patent, is-

1. In a package-elevator, the combination with a tiltable carrying-traycarrying a package, the tray being pivoted substantially under thecenter of gravity of the package, of a trip, and a lever device engagingthe trip and connected to positively tilt the carrying-tray to dischargesaid package, substantially as described.

2. In a package-elevator, the combination with a tiltable carrying-trayand an arm on the tray, of a trip, and a lever device engaging the tripand connected with the arm, substantially as described.

3. In a package-elevator, the combination with a tiltable carrying-trayand a trip, of a lever device including a locking toggle-joint connectedto the tray and engaging the trip, substantially as described.

4;. In a package-elevator, the combination with a tiltable carrying-trayand an arm on the tray, of toggle-joint levers connected to the arm, anda tripping device by which the toggle-joint levers are operated,substantially as described. I

5. In a package-elevator, the combination with a tiltable carrying-trayand an arm on the tray, of a lever device connected to the arm, and acam-shaped trip engaging the free end of said lever device,substantially as described.

6. In a package-elevator, the combination with a trip, of linkssupporting the trip one of which links is extended to form a lever tocontrol the said trip, and abreaking-piece applied to said lever,substantially as described.

7. In a package-elevator, the combination with a carrier comprisingaback plate, a rigid framework attached to the same, and a carrying-traypivotally supported in said framework, of an arm on said tray, a leverdevice connected to said frame and fulcrumed at or near said back plate,and an extension on the lever device projecting through the back plate,and a trip to engage said lever extension, substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this Zlth day of June, 1890.

AUGUSTUS SMITH.

\Vitnesses:

COLERIDGE A. HART, BENJAMIN BIRKnoLz.

